net.i2p.data
Class DataStructureImpl

java.lang.Object
  net.i2p.data.DataStructureImpl

All Implemented Interfaces:

DataStructure

Direct Known Subclasses:

AbuseReason, AbuseSeverity, Certificate, DatabaseEntry, DateAndFlags, DeliveryInstructions, GarlicClove, I2CPMessageImpl, I2NPMessageImpl, KeysAndCert, Lease, LeaseSetKeys, MessageId, Payload, RouterAddress, SessionConfig, SessionId, SimpleDataStructure, TunnelId

public abstract class DataStructureImpl
extends Object
implements DataStructure

Base implementation of all data structures

Author:

jrandom

Constructor Summary

DataStructureImpl()

Method Summary

Hash	calculateHash() Calculate the SHA256 value of this object (useful for a few scenarios)
void	fromBase64(String data) Load the structure from the base 64 encoded data provided
void	fromByteArray(byte[] data)
protected int	read(InputStream in, byte[] target) Repeated reads until the buffer is full or IOException is thrown
String	toBase64() render the structure into modified base 64 notation
byte[]	toByteArray()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.i2p.data.DataStructure

readBytes, writeBytes

Constructor Detail

DataStructureImpl

public DataStructureImpl()

Method Detail

toBase64

public String toBase64()

Description copied from interface: DataStructure

render the structure into modified base 64 notation

Specified by:

toBase64 in interface DataStructure

Returns:

null on error

fromBase64

public void fromBase64(String data)
                throws DataFormatException

Description copied from interface: DataStructure

Load the structure from the base 64 encoded data provided

Specified by:

fromBase64 in interface DataStructure

Throws:

DataFormatException

calculateHash

public Hash calculateHash()

Description copied from interface: DataStructure

Calculate the SHA256 value of this object (useful for a few scenarios)

Specified by:

calculateHash in interface DataStructure

Returns:

SHA256 hash, or null if there were problems (data format or io errors)

toByteArray

public byte[] toByteArray()

Specified by:

toByteArray in interface DataStructure

fromByteArray

public void fromByteArray(byte[] data)
                   throws DataFormatException

Specified by:

fromByteArray in interface DataStructure

Throws:

DataFormatException

read

protected int read(InputStream in,
                   byte[] target)
            throws IOException

Repeated reads until the buffer is full or IOException is thrown

Returns:

number of bytes read (should always equal target.length)

Throws:

IOException